import org.apache.log4j.Logger;
import org.apache.log4j.Priority;

public class LogClass {
	private static org.apache.log4j.Logger log = Logger
			.getLogger(LogClass.class);

	public static void main(String[] args) {
		log.trace("Trace: should print trace info here");
		log.debug("Debug info");
		log.info("Info: the incoming string is empty");
		log.warn("Warn");
		log.error("Error");
		log.fatal("Fatal");
		
	}
}